U.S. President Barack Obama and Britain's Prime Minister David Cameron (R) play table tennis at Globe Academy on May 24, 2011 in London, England. The 44th President of the United States, Barack Obama, and his wife Michelle are in the UK for a two day State Visit at the invitation of HM Queen…

Queen Elizabeth II Photos Photos: British Royals at the Royal Garden Hotel — Part 6

Queen Elizabeth II takes her seat in the State Carriage for the carriage procession as part of the ceremonial welcome ceremony for Singapore's President Tony Tan Keng Yam at the start of a state visit at Horse Guards Parade on October 21, 2014 in London, England.